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US3677730A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of fabricating an array of channel multipliers

Assignee: Bendix Corp
•
Filing: 1968-12-18
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Granted: 1972-07-18
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Expires: 1988-12-18
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Abstract

Abstract A method of forming an array from a bundle of individual channel multipliers, the individual channels being fabricated of a lower temperature softening glass tube to permit the walls of the individual channels to be spiralled and also expanded to fill the interstices within a higher softening temperature outer tube, Also, the invention could be practiced utilizing glass tubes of the same temperature softening characteristic. The expanding and spiralling operation is preformed simultaneously by drawing the bundle of individual channels through a furnace while rotating the feed or pull assemblies of the drawing apparatus to spiral the channel bundle and exhausting the area between the individual tubes and the equal or higher temperature softening glass tube to expand the individual channels.

Inventors

  • 👤 Bagdasar Deradoorian
  • 👤 George W Goodrich
  • 👤 Dimitri G Theodorou

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 04:33
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/04; C03B23/047; C03B23/20; C03B23/207; H; H01; H01J; H01J9/00; H01J9/02; H01J9/12; H01J9/125; H01J2201/00; H01J2201/32

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-07-18 1976-01-17 1976-07-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-07-18 1980-01-17 1980-07-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-07-18 1984-01-17 1984-07-18 $7700.00 Window Closed / Lapsed

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